

#include "atomic_op_namespace.h"

#include <sys/atomic.h>

uint32_t fetch_and_add_4(volatile uint32_t *, uint32_t, ...)
#if defined(_LIBC) || defined(_HARDKERNEL)
    asm("__sync_fetch_and_add_4");	/* C runtime internal */
#else
    ;
#endif

uint32_t
fetch_and_add_4(volatile uint32_t *addr, uint32_t val, ...)
{
	uint32_t old, new;

	do {
		old = *addr;
		new = old + val;
	} while (atomic_cas_32(addr, old, new) != old);
	return old;
}

void
atomic_add_32(volatile uint32_t *addr, int32_t val)
{
	(void) fetch_and_add_4(addr, val);
}

#undef atomic_add_32
atomic_op_alias(atomic_add_32,_atomic_add_32)

#undef atomic_add_int
atomic_op_alias(atomic_add_int,_atomic_add_32)
__strong_alias(_atomic_add_int,_atomic_add_32)

#if !defined(_LP64)
#undef atomic_add_long
atomic_op_alias(atomic_add_long,_atomic_add_32)
__strong_alias(_atomic_add_long,_atomic_add_32)

#undef atomic_add_ptr
atomic_op_alias(atomic_add_ptr,_atomic_add_32)
__strong_alias(_atomic_add_ptr,_atomic_add_32)
#endif /* _LP64 */

__strong_alias(__atomic_fetch_add_4,__sync_fetch_and_add_4)
